the vest is, well, it's a vest (duh, lol) that inflates and claps your back at different speeds and pressures. It pretty much does hand percussion for you. They are expensive but you might be able to talk to the vest company and your insurance company and see if things are possible. I only was able to afford one because a few years ago, the vest company said that they would pay for every cfer to have one if insurance wouldn't pay for it (and my insurance is stupid, lol). Anywho...to answer the itching question...yes, it is itchy! My chest usually itches when I use it (even more if I cough with it on). I thought this was just a weird thing with me, ha.
erin
19/f/cf